Influence of long-chain fatty acids on weight gain of Hylastinus obscurus (Coleoptera: Curculionidae)

Toledo D.; Parra, L; Mutis, A; Ortega, F; Hormazabal E.; Quiroz, A.

Keywords: deterrent, hylastinus obscurus, trifolium pratense, palmitic acid

Abstract

The contents of long-chain fatty acids in non-polar root extracts from 1.6 year-old red clover plants of two cultivars (Superqueli INIA and Quifiequeli INIA) and one experimental line (Syn II Pre III), their relationships with H. obscurus populations, and the stimulant or deterrent effects of the root extracts and of individual fatty acids on the weight gain of H. obscurus were investigated. There was an inverse relationship between the insect population size and the palmitic acid content. The Superqueli INIA cultivar contained the highest palmitic acid content and the lowest insect load. When solutions of either palmitic or oleic acids were individually incorporated into an artificial diet, palmitic acid caused a decrease in weight gain, whereas the effect of oleic acid was similar to that of the phagostimulant saccharose. Hence, palmitic acid might be applied directly in H. obscurus control programs to prevent or reduce feeding and oviposition behaviors or might be used as a tool for selecting resistant cultivars.

Más información

Título según WOS: Influence of long-chain fatty acids on weight gain of Hylastinus obscurus (Coleoptera: Curculionidae)
Título según SCOPUS: Influence of long-chain fatty acids on weight gain of Hylastinus Obscurus (Coleoptera: Curculionidae) [Infuencia de ácidos grasos de cadena larga sobre el aumento de peso de Hylastinus obscurus (Coleoptera: Curculionidae)]
Título según SCIELO: Influence of long-chain fatty acids on weight gain of Hylastinus obscurus (Coleoptera: Curculionidae)
Título de la Revista: CIENCIA E INVESTIGACION AGRARIA
Volumen: 41
Número: 3
Editorial: PONTIFICIA UNIV CATOLICA CHILE, FAC AGRONOMIA INGENIERIA FORESTAL
Fecha de publicación: 2014
Página de inicio: 357
Página final: 364
Idioma: English
DOI:

10.4067/s0718-16202014000300008

Notas: ISI, SCIELO, SCOPUS